Mixing or blending machine.



W. L. LAWSON.

MIXING 0B. BLENDING MACHINE.

APPLIOATIOH nun MAY 2a, 1913.

1,0711%. F Patented 0ct.28,1913.

2 SHEETS-SHEET 2.

N ZILLLawaa/z I am WWI/tame W. L. LAWSON. MIXING 0B. BLENDING MACHINE. APPLIOATION FILED MAY 2a, 1913.

Patented Oct. 28, 1913.

2 SHEETS-SHEET 1.

WILLIAM L. LAWSON,

OF MOUNT "CARMEL, ILLINOIS.

MIXING 0R BLENDING MACHINE.

Specification of Letters Patent.

Patented 001;.28, 1913.

Application filed May 28, 1913. Serial No. 770,307.

To all whom at may concern Be it known that I, WILLIAM L. Lawson, a citizen of the United States, residing at Mount Carmel, in the county of Wabash and State of Illinois, have invented certain new and useful Improvements in Mixin or Blending Machines, of which the following is a specification.

My invention relates to improvements in mixing or blending machines for the mixing or blending of flours, cereals, chemicals, powders, .or the like, the present embodiment being particularly designed and adapted for the mixing or blending of any compound requiring great agitation to brin the mixtures into complete uniformity whet er in powder or liquid form.

The primary object of the invention is to provide a generally improved mixing or blending machine of this class of exceedingly simple, cheap, and efficient construction, and having its parts detachably and removably arranged whereby inspection and repair may be readily made.

A still further object is to improve the construction and relative disposition of the spiders and float members carried by the latter, whereby the material to be mixed will be properly agitated and given the proper to and fro movements within the mixing chamber or casing. In carrying out this object I provide a series or plurality of twoarmed spider members removably mounted on a common shaft and arranged in progressive spiral relation, each arm being provided with an outer and inner float plate, said inner and outer float plates being arranged at right angles to each other, theouter float plates being disposed in an inclined spiral relation in close proximity to the walls of the mixer casing so as to have a tendency to convey the material in one direction, and the inner float plates belng arranged in a reverse spiral relation so as to tend to convey the material in an opposite direction, and as a means for equalizing the agitation by reason of the difference in the speed of rotationof the inner and outer float plates, the outer float plates are made narrower so that the material ma uniform level w ile being agitated, therebeing suitable breaks between the successive float plates so as to allow the material to pass between them and lessen the conveying speed as well as increasing the -m1xing capaoity.

be kept of a substantially the invention conslsts in the novel construction, arrangement, and combination of parts,

hereinafter describ illustrated in one of its embodiments in the accompanying drawings, and particularl pointed out in the appended claims.

Referring to the drawings, forming a part of this specification, Figure 1 is a view, partly insection and partly in side elevation, of a mixing or blending machine constructed in accordance Fig. 2, an enlarged detail sectional view taken on line 22 of Fig. 1, and showing improved means for securing the doors in closed position. Fig. 3, a cross sectional view taken on line 3-3 of Fig. 1. Fig. 1, an enlarged detail view of a modified form of spider member showing detachably mounted arms and the arrangement of the float plates carried by the latter. Fig. 5, a longitudinal sectional view of one of the spider arms shown in Figs. 1 and 2, and showing means whereby the -outer float plates may be adjusted.

Similar numerals of reference designate like parts throughout all the figures of the drawings.

The improved mixing machine comprises a main body portion or casing consisting of an upper rectangular body 1, supported upon a suitable frame 2, and a semi-cylindrical bottom '3, removably' mounted beneath the body 1, in the present instance, by means of semi-cylindrical hanger members 4, the latter being connected at their ends to the sides of the frame 2, by means of bolts 4*.

The semi-cylindrical bottom may be provided with an outlet opening 5, adapted to be opened and closed by means of a suitable slide valve 5, and the rectangular shaped body may be provided with an inlet opening 6, through which the material to be mixed or blended is conducted to the mixing or blending machine.

The sides of the upper 'bod provided at suitable interva s with hinged doors 7 the upper free ends of said doors being adapted to be secured and clamped in closed position by means of pivotally mounted button members 7 the latter being threaded on non-rotatable bolts 8, said bolts being mountal from the inner sides of the casing 1, and having their heads 8*, seated in similarly shaped openings so that when the button members are turned to their portion 1, are

closed positions they will be drawn up upon the bolts 8, to firmly clamp the free edges of the hinged doors 7.

The mixing mechanism comprises a driving shaft 9, mounted in suitable bearings 9*, of the ends of the frame 2, said driving shaft being adapted to receive its motion through the medium of a gear wheel 10, meshing with a pinion 11, the pinion 11 being mounted on the'shaft 12, carried in bearings 13, said bearings being mounted, in the present instance, beneath cross members 14, at one end of the machine frame.

A plurality of spider members are removably and adjustably mounted on the shaft 12, said spider members members 15, secured upon the-shaft 12, by

means of set screws 15, each hub member being provided with arms 16, arranged in opposite diametrical relation to each other, and each arm 16, being provided with inner and outer float plates 17 and l8,respectively, said inner and outer float plates being arranged at right angles to each other, and said outer float plates 18, being disposed in an inclined spiral relation in close proximity to the walls of the semi-cylindrical bottom 3, the inner float plates 17, being arranged in reverse spiral relation so as to convey the material in an opposite direction from that given by the outer float plates, and as a means for equalizing theagitation by reason of the difference in the speed of the rotation of the inner and outer float plates, the outer float plates 18, are made narrower so that the materialbeing mixed may be kept at a substantially uniform level throughout the mixing chamber during the operation of agitating and mixing. It will also be observed that the arms of the spider members are arranged in progressive spiral relation within the mixing chamber or casing and upon the shaft 12, and that the inner and outer float plates 17 and 18 follow this progressive spiral relation except that the inner float plates are arranged at right angles to the outer float plates and are arranged in reverse spiral relation for the purposes above mentioned. Furthermore, the outer float plates are spaced apart forming breaks or intervening recesses 18*, as shown most clearly in Fig. 3, of the drawmgs.

If desired, the arms 16, of the spider members may be separately formed and removably mounted in the hub members through the medium of hub sockets 15*, adapted to removably receive and contain the arms,16, carrying the float plates 17 and 18, as shown in Fig. 4, of the drawings, said arms being adapted to be removably secured in the hub sockets 15, by means of set screws 19, adapted to extend into annu comprising hub 1 lindrical bottom, a

lar grooves 16", at the inner ends of the arms 16.

If desired the outer float plates 18, may be adjustably mounted upon the arms 16, by means of adjusting screws 20, passing through slots 16 ,'in the outer ends of the arms 16, as shown most clearly in Figs. 1 and 5, of the drawings.

From the foregoing description, taken in connection with the accompanying drawings, the operation and advantages of my invention will be readily understood.

Having thus described one of the embodiments of my invention, what I claim and desire to secure by Letters Patent is,-

1. In a mixing machine, a hub provided with socket members, arms removably mounted in said socket members, and curved inner and outer float plates mounted on each of said arms and arranged at substantially right angles to each other.

2. In a mixing machine, a driving shaft, spider members mounted thereon, and inner and outer curved float plates carried by said spider members at substantially right angles to each other and arranged in reverse spiral relation, said outer iloat plates ,being successively arranged in spaced relation to each other and being narrower than said inner float plates.

3. A mixing machine, comprising a casing having a semi-cylindrical bottom, a

driving shaft in said casing, two-armed spider members removably mounted on said shaft in progressive spiral relation within said casing, outer and inner float plates carricd by the arms of said spider members at right angles to each other, said outer float plates being disposed in an inclined spiral relation within and in close proximity to said semi-cylindrical bottom.

t. A mixing machine, comprising a casing having a removably mounted semi-cydriving shaft, twoarmed spider members remo-vably and ad'- justably mounted on said shaft in progressive spiral relation, and inner and outer float plates on each of said arms, said outer float plates being narrower'than said inner float plates and being arranged in spaced relation to each other and following the.

WILLIAM L- LAWSQN.

Witnesses i J. F. BAUMcmsr, U. U. Scnucnnn. 

